| 摘要 |
PURPOSE:To reduce the reactive part of a coil which does not contribute to the production of torque by devising the way of winding a coil. CONSTITUTION:Coils 9a-9d from the coil of the first phase, and the coils 9b, 9c, 9d are disposed at the positions of pi, 3pi, 4pi of electric angles to the coil 9a with the coil 9a as a reference coil. On the other hand, coils 10a-10d form the coil of the second phase, and are disposed at the position of pi/2 of an electric angle to the coils 9a-9d. In other words, the coil 10a is disposed at pi/2 of an electric angle to the coil 9b, similarly the coil 10b to the coil 9c, the coil 10c to the coil 9d and the coil 10d to the coil 9a. When the coils are thus disposed, the reactive parts of the coils which do not cross a magnetic field which is generated by a permanent magnet 5 are not generated. |
